Articles tagged with Arteries
Researchers have made progress in understanding atherosclerosis, identifying potential new approaches for early detection and therapy. The study found that TREM2 regulates the activity of macrophages, playing an important role in forming unstable plaques that increase heart attack and stroke risk.
Researchers found that Kupffer cells in liver respond to high cholesterol by removing excess, revealing the liver's role in regulating cholesterol levels. This discovery suggests atherosclerosis is a systemic disease affecting multiple organs.
Researchers at UVA Health System have discovered genetic clues that may help identify people at risk of cardiovascular disease, including atherosclerosis. The study identified 20 locations on chromosomes that influence protein production, shedding light on why smooth muscle cells sometimes are beneficial and sometimes harmful.
Researchers at the University of Virginia Health System are developing a technique to 'paint' tiny nanoparticles on transplanted veins to prevent blockages, potentially sparing patients from repeated surgeries. This approach could significantly reduce the number of vascular reconstructions performed annually in the US.
Researchers developed a new catheter-based device combining FLIM with polarization-sensitive OCT to image atherosclerotic plaques. The hybrid approach provides unprecedented information on plaque morphology, microstructure, and biochemical composition.
A new study published in Radiology found that coronary artery calcium scoring can identify patients with a low risk of heart attacks or strokes. Patients with a zero coronary artery calcium score showed very low risk of major adverse cardiovascular events, suggesting they may not require invasive coronary angiography.
The Almodóvar lab is studying the link between HIV and pulmonary hypertension, a condition that increases pressure in lung arteries. By examining the interactions between different cell types and using a humanized mouse model, researchers hope to propose novel therapies to prevent lung diseases in people with HIV.
Using intravascular imaging to guide stent implantation significantly improves survival and reduces adverse cardiovascular events compared to angiography-guided PCI. The study found a 25% reduction in all-cause death, 45% reduction in cardiac death, and improved outcomes for patients with coronary artery disease.
Researchers discovered that consuming over 22% of daily calories from protein can lead to increased activation of immune cells contributing to atherosclerotic plaque formation. Leucine, an amino acid found in animal-derived foods, plays a disproportionate role in driving pathological pathways linked to atherosclerosis.
Researchers at Mount Sinai Health System developed a novel protocol for rapid diagnosis of eye stroke, improving outcomes and preserving vision. The protocol uses high-resolution retinal imaging in emergency rooms, along with remote consultation, to confirm diagnosis and expedite care.
Researchers found that injecting a substance to block an artery and combining it with surgery significantly reduced the risk of repeat surgery for patients with subdural hematomas. The study, published at the American Stroke Association's International Stroke Conference, showed a nearly 3-fold reduction in re-operation rates.
Researchers found that positioning stroke patients with large vessel ischemic strokes at 0-degrees resulted in significant improvements in neurological function compared to those with 30-degree head positioning. This approach optimized blood flow through the narrowed artery and improved collateral arteries, leading to better outcomes.
Researchers have discovered a new treatment that enhances the body's natural defences against atherosclerosis in patients with rheumatoid arthritis. Treating arthritic mice with RvT4 reduces blood vessel inflammation by re-programming macrophages to release stored lipids.
Researchers developed an AI-driven algorithm that accurately predicts death and complications after percutaneous coronary intervention (PCI). The tool uses patient feedback to provide a patient-centered, individualized risk prediction score.
Researchers at Fralin Biomedical Research Institute and Carilion Clinic found that preserving leg vein grafts in heparinized arterial blood, rather than saline, improves their health and viability. This discovery could lead to better outcomes for patients undergoing coronary artery bypass graft procedures.
A new study from the University of Gothenburg reveals that night owls are more likely to develop artery calcification than early risers. The research, which examined data from over 771 middle-aged participants, suggests that circadian rhythms play a crucial role in cardiovascular disease.
The Canadian Cardiovascular Society has updated its guidelines to no longer recommend routine daily aspirin use for primary prevention of heart attacks or death. However, daily aspirin may be considered for people with high risk factors for heart attack, such as diabetes, high cholesterol, and smoking. The new guidelines emphasize the ...
Eating fatty foods during stressful periods can reduce brain oxygenation and cause poorer vascular function in adults. Consuming low-fat food and drinks may help mitigate this effect.
Researchers at Temple University Health System report that the BASHIR Endovascular Catheter reduces blockages in lung arteries and correlates with improved right ventricle function, suggesting better survival outcomes. The catheter also shows significantly lower bleeding rates compared to other devices.
A study of over 2.9 million patients found that gender concordance was associated with lower mortality for female patients, but higher mortality for male patients. The quality of surgical care provided by female surgeons is equivalent to or slightly better than that provided by male surgeons.
A new resorbable scaffold has been shown to be more effective than traditional angioplasty in treating severe artery blockages in the lower leg. In a large clinical trial, patients who received the scaffold had a 74% chance of avoiding adverse events, compared to 44% for those who underwent angioplasty.
A new study suggests that a PCSK9 inhibitor given every 1-3 months may effectively lower bad cholesterol levels in people with non-genetic hypercholesterolemia. The medication, recaticimab, showed similar effectiveness and safety as other PCSK9 inhibitors when administered less frequently.
Yabing Chen has received two NIH grants totaling over $5 million to investigate vascular diseases and their link to dementia. Her research focuses on Runx2, a master transcription factor involved in both bone formation and calcification of arteries.
The American Heart Association has selected five finalists in its 6th annual Health Tech Competition to present their innovative technologies. The competition aims to drive technology innovation and transform the landscape of heart and brain health.
A new study published in eClinicalMedicine suggests that ECG-AI can flag some risks years sooner than current risk calculator equations by identifying signs of coronary artery disease, such as calcification and blockages. The technology has the potential to save more lives by identifying people who do not know they have coronary disease.
Researchers found that DNA damage accumulates in arteries with aging and contributes to impaired vascular function. In mice lacking or heterozygous for the double-strand DNA break repair protein ATM kinase, aging accelerated vascular dysfunction, including increased arterial stiffness and oxidative stress.
A new study finds that short and long-term blood pressure fluctuations increase the risk of dementia and vascular problems in older people. Higher systolic BP variations are also linked with stiffening of the arteries, a key factor in heart disease.
A real-world study confirms the reliability and effectiveness of the Pooled Cohort Equation (PCE) in assessing cardiovascular risk, regardless of statin use. The PCE performed well across different demographics and retained accuracy with measurement factors outside its original risk profile range.
Researchers discovered that a mutation in the gene ACTA2 causes moyamoya disease and strokes in young children. The mutation leads to dysfunctional smooth muscle cells in arteries, resulting in blockages and increased risk of stroke. Understanding this mechanism could lead to new treatments for moyamoya disease.
A large study of 74,471 patients found that those who quit smoking after percutaneous coronary intervention (PCI) have comparable rates of heart attacks, strokes, and deaths to non-smokers. However, heavy smokers showed no improvement in cardiovascular outcomes.
A new CT test can identify individuals with stable angina at a reduced risk of three-year adverse outcomes despite having high coronary artery calcium scores. The test uses AI algorithms and computational fluid dynamics to simulate blood flow through the coronary arteries.
The new guidelines provide comprehensive advice on managing unstable angina and all types of acute myocardial infarction. Key findings include the importance of timely intervention to minimize heart muscle damage and the need for personalized care considering patient perspectives, needs, and beliefs.
A team of researchers compared the development of blood vessels in various animals, including mice, quails, and fish, to understand the origins of the human heart. They found that the structure of the human coronary arteries likely evolved from a common amniote ancestor, adapting to life on land.
The Texas Heart Institute has been awarded $1.14 million by the NIH to develop a novel, first-in-class drug for treating atherosclerotic cardiovascular disease. The goal of this research is to target lingering inflammation in patients with cardiovascular disease.
Research reveals that high blood pressure disrupts artery cell messaging, causing arteries to remain constricted and limiting blood flow to the brain. The study provides a potential route for developing first-ever drug treatments for vascular dementia.
Researchers at NUS have developed a new treatment method that reduces the size and increases the stability of atherosclerotic plaques in arterial walls. The treatment involves injecting omega-3 fatty acids into the bloodstream via nanomedicine, which helps to reduce inflammation and prevent plaque rupture.
A study published in Stroke found significant disparities in stroke risk factors between Black and non-Black adults. However, after one year of intensive medical intervention, some risk factors were reduced in Black adults.
A University of Minnesota-led study identified higher incidence of brain hemorrhage, hardening of the arteries, and small vessel disease in Hmong stroke patients. Risk factors such as high blood pressure and diabetes are prevalent among this community.
The placenta forms an unusual organ that requires unique cooperation between genetically mismatched maternal and fetal cells. Researchers have mapped the intricate dance between trophoblasts and the mother's immune system, shedding light on how to develop new treatments for pregnancy complications like preeclampsia and miscarriages.
A Michigan Medicine study finds that patients who participate in cardiac rehabilitation have a decreased risk of death years after surgery. The greatest reduction in mortality was found in patients who completed 36 or more sessions, highlighting the need for targeted efforts to improve participation and adherence.
Researchers found a strong association between certain gut bacteria and coronary atherosclerotic plaques, which can lead to heart attacks. The study analyzed gut bacteria and cardiac imaging data from over 8,900 participants and identified Streptococcus species as key players.
A novel molecular pathway has been identified, explaining how a mutation in the ACTA2 gene can cause individuals in their 30s with normal cholesterol levels to develop coronary artery disease. The mutation leads to stress in smooth muscle cells, triggering the production of excess cholesterol and driving atherosclerotic plaque formation.
The American College of Chest Physicians (CHEST) has released a new clinical guideline for managing antithrombotic therapy in patients with COVID-19-related arterial thrombosis and thromboembolism. The guideline provides evidence-based recommendations to improve risk-evaluation and treatment course.
Researchers found that 'concerning' CT imaging results were associated with lower clinical outcomes and shorter hospital stays in low-risk patients with acute pulmonary embolism. This suggests that emergency physicians may be managing these patients differently, leading to unnecessary hospitalizations.
Peripheral artery disease (PAD) disproportionately affects Black adults, with higher rates of diagnosis and poor outcomes. Low-cost, routine testing can help reduce disparities and health care costs by identifying individuals at risk and providing preventive measures.
Scientists at RIKEN Center for Brain Science find that somatic mutations in six genes lead to intracranial aneurysms, which can be blocked with a drug. The study establishes the first non-surgical animal model of intracranial aneurysm and provides a potential new treatment option.
A new study found that elevated Lipoprotein(a) levels are a significant predictor of recurrent coronary heart disease (CHD) in people over 60. The study suggests current cholesterol-lowering medications may not be effective in reducing the risk of recurrent CHD, highlighting the need for novel therapeutics to target elevated Lp(a).
Researchers found that women with higher-quality cardiovascular fat during midlife had stronger long-term memory and lower inflammation, while those with lower-quality fat had worsening working memory. The study suggests that taking care of heart health during menopause may protect brain health and reduce dementia risk.
A new study published in the European Heart Journal found that plant-based diets can play a significant role in reducing blocked arteries and lowering the risk of heart and blood vessel diseases. The analysis of 30 randomised trials with over 2,300 participants showed a 14% reduction in artery-clogging lipoproteins.
A new Northwestern University study finds that CT scans are more effective than genetics in predicting the risk of heart disease in middle-aged individuals. The study used data from over 3,200 adults and found that adding CT scan data to conventional risk factors improved the accuracy of risk prediction.
A new analysis of COVID-19 patients with heart attacks reveals increased clotting in coronary arteries before and after treatment. High TGB was observed in 74% of patients pre-intervention and 29% post intervention.
A new study confirms that distal radial artery access is safe and effective for cardiac catheterization, without increasing the risk of hand dysfunction. The one-year findings from the DIPRA study demonstrate comparable outcomes between distal radial artery and conventional proximal radial artery access.
A global clinical trial found that bioresorbable vascular scaffolds (BVS) are nearly as safe and effective as conventional metal stents in treating coronary artery disease. The study, led by a researcher from the Mount Sinai Hospital, showed improved outcomes for patients when properly implanted.
A new onsite deep-learning based FFR-CT algorithm demonstrates excellent diagnostic performance, with high interobserver and intraobserver reproducibility. The algorithm showed AUC of 0.975, sensitivity of 93.5%, and specificity of 97.7% for hemodynamically significant stenosis.
A study found that COVID-19 can cause stiffer and more dysfunctional arteries, leading to increased risk of cardiovascular disease. The study suggests that age and time since infection are associated with increased ageing of the arteries.
Researchers have developed a non-invasive technique using laser speckle imaging to visualize microvasculature in donor hearts and detect abnormal blood flow. The method enables precise visualization of blood circulation, potentially identifying hearts suitable for transplantation.
A study published in Circulation Research identifies the FHL5 gene as a key regulator of vascular disease, including heart attacks and aneurysms. The discovery advances our understanding of the underlying causes of vascular disease and provides new insights into genetic risk factors.
A novel treatment approach called balloon pulmonary angioplasty has been shown to be effective in treating chronic blood clots in lung arteries. The procedure improves exercise capacity and quality of life, with some patients able to stop medications altogether. Refinements in technique have improved the procedure's safety and efficacy.
Researchers develop a new technique to measure blood attenuation using a fluorophore-coated guidewire, improving the accuracy of near-infrared fluorescence in cardiovascular imaging. The method provides accurate information on vessel walls and outperforms existing correction methods.
Hokkaido University researchers evaluate a material used to build model arteries, finding it suitable for medical education and surgical practice. The study also highlights the potential for improved assessment of 3D printing technology in creating highly accurate models of individual patient's artery structure.